/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: ZhongJinTao
 * Date: 2024-04-20
 * Time: 16:20
 */
public class Test {
    public static void main(String[] args) {
        String s = "hello world";
        System.out.println(s);
        String newS = s.replaceAll("hello", "sssss");
        System.out.println(newS);
    }
}
